Fire pot



Jan. 9, 1923.

T. J. O'LOUGHLIN ET AL FIRE P01. FILEDNOV. 13, 1919.

gmvewfoz 77205.1 OZougfzZin He y 5. Smith Patented Jan, 9, 1923. I

" 59 YifiW m NPH mY slimmercmcaeog-nanvors.

ran rota- Application filed Movement, 191a ;sepia1-1-ioj;ss7,so2,

gasoline or kerosene, and constructed on the order of the furnace shown in Patent No. 1,090,009 of Mar. 10, 1914-to A. J. Archambault.

The invention has for its object to'provide the appliance with certain novel and improved structural details to be hereinafter described and claimed, and in order that the same may be better understood, reference ishad to the accompanying drawing replaced. 0 An enclosure is thus had in'which the section subjected to extreme heat is duforming a part of this specification.

In the drawing,

Figure l is a plan view of the part which present appli- I s burner is easily reniovable for access tothe is the subject matter of the cation for patent;

Fig. 2 is a side elevation thereof, and. Fig. 3 is a section on the line 33 of Fi a 1.

Iteferring specifically to the drawing, 5

denotes atop plate having lugs 6 for holding the usual shield (not shown) on said plate, these parts corresponding, respec-' tively, to theplate 17 and the shield above it in the patent referred to. Beneath the top plate, in line with a central opening 7 therein, is located the vaporizi coil or retort 8, the same being surrounded by a hood or jacket 9. Ordinarily, this hood or jacket is of sheet metal and separate from the cast top plate and bolted or otherwise secured thereto. I

The heat to which the hood and the fasteners are subjected is so extreme that the hood soon becomes distorted or cracks loose from the top plate, and the fasteners become tightly jammed, requiring them to be cut away to permit the removal of the dam- I aged hood or clinging sections thereof. In-' asmuch as the hood is ordinarily made integral with the burner chamber below, the condition described makes it necessary to replace the entirehood and burner chamber, even though the latter on account of its THoMAs J."

i ismetene eafrou ih l fiamelmey illh in I good condition. y r 1 In order to-avo1d the labor and expense involved in a repair of the naturedescribed,

the hood in the improved structure is made integral with the top plate but separate from the burner chamber 10. Thus, the hood is cast in onepiece with the top plate, and is of suflicient thickness .to and the top plateto withstand extreme heat for a long ti1ne.-- WVhen corroded or cracked, the casting could easily be replaced at small expense and with "little labor. The sheet metal burner chamber is applied to the lower end of the, hood by a detachable connection, which consists of providing the lower end of the hood with headed side studs ll which' seat in bayonet slots 12in the top edge of the burner chamber 10. Thus, after giving thelatter a slight twist it may be slipped off the hood 9, and by a enable it s reversal of this operation 'itcan be easily rable and easily replaced at small expense,

and in which the fsection enclosing the burner and coil, and isnot affected by damage to the section which is subjected to heat.

It willbe noted: that the parts9'and 10 are tapered, the taper of the part 9 beingdown wardly so that the larger top portion of .the member 10- may bemountedto embrace the smallerbottom portion of the member 9. This taper is important as it facilitates the removal of the member 10 from the member 9.

The fuel reservoir and other parts of the complete appliance have notbeen illustrated as they form no part of the present invention.

We claim l. A device of the kind described com-' mg an integral radial flange at its larger" top end fornnng a top plate, and means providing a combustion chamber extension; adapted to be detachablv secured to the bottorn end of 'saidtubulai body. I v r A device 'of I the kind described, comprising a tapered tubular body member having an integral radial 'fiangeat its larger] top end forming the top plate,and a sheet metal combustion chamber extension *car-.

ried by the bottom end of said tubular body,

said combustion chamber extension and last mentioned end ofsaid body having coacting attaching 'meansby which the combustion chamber extension is detachably secured to the. tubular body. v r v radial flange; providinga top plate, a similarly tapered combustion chamber extension adapted to embrace the smaller bottom end of said tubularabody, said bottom end of said body and top endofsaid combustion chamber extension having coaoting bayonet slot. attaching ,devicesby which said c0mbustion chamber extension is removably attachedto the body member. s

In testimony whereof We affix our signatures.- I 1 Q THOMAS J. OLOUGHLIN. HENRY SMITH. 

